Personne
Roohollah Sarfaraz Khabbaz
Cette personne n’est plus à l’EPFL
Publications associées (13)
Fracture mechanics-based progressive damage modelling of adhesively bonded fibre-reinforced polymer joints
Thomas Keller, Anastasios Vassilopoulos, Moslem Shahverdi, Roohollah Sarfaraz Khabbaz, Aida Cameselle Molares
A quasi-static progressive damage model for prediction of the fracture behaviour and strength of adhesively bonded fibre-reinforced polymer joints is introduced in this paper. The model is based on the development of a mixed-mode failure criterion as a fun ...
Wiley2017An experimental-numerical investigation of hydrothermal response in adhesively bonded composite structures
Véronique Michaud, John Botsis, Hans Georg Limberger, Georgios Violakis, Roohollah Sarfaraz Khabbaz, Luis Pablo Canal Casado
Water absorption and thermal response of adhesive composite joints were investigated by measurements and numerical simulations. Water diffusivity, saturation, swelling, and thermal expansion of the constituent materials and the joint were obtained from gra ...
Elsevier2015Monitoring strain gradients in adhesive composite joints by embedded fiber Bragg grating sensors
Véronique Michaud, Hans Georg Limberger, Georgios Violakis, Roohollah Sarfaraz Khabbaz
The adhesive bonding of composite materials can be applied to assemble light-weight structures for aeronautical applications. However, the application of adhesive bonds in primary load-bearing structures is limited by the lack of adequate techniques to mon ...
2014Monitoring strain gradients in adhesive composite joints by embedded fiber Bragg grating sensors
Véronique Michaud, John Botsis, Hans Georg Limberger, Georgios Violakis, Roohollah Sarfaraz Khabbaz, Luis Pablo Canal Casado
The adhesive bonding of composite materials can be applied to assemble light-weight structures for aeronautical applications. However, the application of adhesive bonds in primary load-bearing structures is limited by the lack of adequate techniques to mon ...
Elsevier2014MODELING THE PROGRESSIVE DAMAGE OF ADHESIVELY BONDED JOINTS
Thomas Keller, Anastasios Vassilopoulos, Moslem Shahverdi, Roohollah Sarfaraz Khabbaz
A quasi-static progressive damage model based on the fracture mechanics approach was developed for adhesively-bonded pultruded glass fiber-reinforced polymer (GFRP) joints. The model comprises the implementation in a numerical algorithm of a mixed-mode fra ...
2014Variable amplitude fatigue of adhesively-bonded pultruded GFRP joints
Thomas Keller, Anastasios Vassilopoulos, Roohollah Sarfaraz Khabbaz
The fatigue behavior of adhesively-bonded pultruded GFRP joints subjected to variable amplitude loading patterns was experimentally investigated. The failure mode of the examined joints was found to be similar to that under constant amplitude loading. The ...
Elsevier Sci Ltd2013Modeling the constant amplitude fatigue behavior of adhesively bonded pultruded GFRP joints
Thomas Keller, Anastasios Vassilopoulos, Roohollah Sarfaraz Khabbaz
The constant amplitude fatigue behavior of adhesively bonded pultruded glass fiber reinforced polymer double-lap joints were modeled by a number of conceptually different phenomenological SN (cyclic stress vs. number of cycle) formulations. An extended dat ...
Brill Academic Publishers2013Block loading fatigue of adhesively bonded pultruded GFRP joints
Thomas Keller, Anastasios Vassilopoulos, Roohollah Sarfaraz Khabbaz
The effect of loading sequence on the fatigue behavior of adhesively-bonded pultruded GFRP double-lap joints was experimentally investigated by applying different tensile and compressive block loading patterns. The observed failure modes were consistent wi ...
2013Fatigue Life Prediction of Adhesively-Bonded Fiber-Reinforced Polymer Structural Joints under Spectrum Loading Patterns
New load-bearing structures made of fiber-reinforced polymer (FRP) composites comprise
adhesively-bonded joints, which are components vulnerable to fatigue failure. These
structural components are frequently subjected to complex cyclic loading histories ...
EPFL2012Experimental investigation and modeling of mean load effect on fatigue behavior of adhesively-bonded pultruded GFRP joints
Thomas Keller, Anastasios Vassilopoulos, Roohollah Sarfaraz Khabbaz
The effect of mean load on the fatigue behavior of adhesively-bonded pultruded GFRP double-lap joints under constant amplitude loading was experimentally investigated. The joints were examined under nine different stress ratios (R) representing pure tensio ...
Elsevier2012